Improvements in frequency changers,申请号GB19490007199-传众专利搜索

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发明名称	Improvements in frequency changers
摘要
申请公布号	GB671164(A)	申请公布日期	1952.04.30
申请号	GB19490007199	申请日期	1949.03.16
申请人	THE BRITISH THOMSON-HOUSTON COMPANY LIMITED;JACK HOLMES WALKER;WILLIAM JOHN GIBBS	发明人
分类号	H02K47/24	主分类号	H02K47/24
代理机构		代理人
主权项
地址

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